"Tractors, wagons, combines, and trailers--what are these things? They're all machines on a farm! How do they work? What are they for? Kids can get to know the many machines that make farms go in this interactive Pebble Sprout series"--
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"Tractors, wagons, combines, and trailers--what are these things? They're all machines on a farm! How do they work? What are they for? Kids can get to know the many machines that make farms go in this interactive Pebble Sprout series"--
Read Less